Discount Calculator
WEBFind the sale price and how much you save from any discount percentage.
What is the Discount Calculator tool?
This discount calculator tells you two things the moment you enter a price and a percent off: the sale price you will actually pay, and how much money you save. No mental math in the store aisle — type 249 and 30% and you instantly see a sale price of 174.30 with 74.70 saved. Adjust the percent and watch both numbers update live, so comparing a 25% code against a 30% code takes seconds.
It is built for shopping on a phone: big inputs, instant results, and everything computed client-side in your browser — the page keeps working offline once it has loaded, and nothing you type is sent anywhere. It is free, needs no sign-up, and because it works on plain numbers it fits any currency on the tag — pounds, dollars or euros alike.
The percent-off math also answers the questions around a sale. Stacked discounts multiply rather than add — an extra 10% off an already-30%-off price is 37% off in total, not 40% — and you can chain them here by feeding the sale price back in as a new starting price. For percent questions beyond shopping — percent change, what-percent-of — Carbide's percentage calculator has dedicated modes for each.
How to use the Discount Calculator
- Enter the original price from the tag.
- Set the discount percentage — anything from 0 to 90%.
- Read the sale price and the amount you save, updated instantly.
- Try a different percent to compare two offers side by side.
- For stacked discounts, enter the sale price as a new starting price and apply the second percent.
Frequently asked questions
How do you take 20% off a price?
Multiply the price by 0.80 — a 60 item at 20% off costs 48. The calculator does this for you and also shows the 12 you saved.
How do I find the original price before the discount?
Divide the sale price by (1 − discount ÷ 100). If you paid 70 after a 30% discount, the original price was 70 ÷ 0.70 = 100. The tool computes forward from the original price, so use this quick formula for the reverse question.
Do stacked discounts add up?
No — they multiply. A 30% discount followed by an extra 10% leaves you paying 0.70 × 0.90 = 63% of the original, which is 37% off in total, not 40%. Chain them in the calculator by using the first sale price as the new starting price.
Is the discount calculator free?
Yes — completely free, with no sign-up and no limit on how many prices you check.
Is what I enter private, and does it work offline?
Both. The math runs in your browser, nothing is sent to a server, and once the page has loaded it keeps working with no connection — handy in shops with weak signal.
Why not just use the percentage calculator?
Same math, different shape. The percentage calculator answers general percent questions; this one is shaped for shopping — price in, sale price and savings out, with no mode to choose. If you are standing at a rack comparing offers, this is the faster of the two.
